Omron SYSMAC CS1W-ETN21 Operation Manual page 245

Troubleshooting Procedures
Reception Problems
Reception problems
Is reception processing
not finishing?
(If you are using the Socket Service
Request Switches, check the response
code to see if it is other than 0000
Hex.)
code in the results storage
area a value other
Return to the procedure
for general problems.
Transmission Problems
Transmission problem occurred.
Is send processing
finishing?
Y
Return to the procedure for
general problems.
220
occurred.
N
node not processing
Y
Read memory status using
the FINS command READ
MEMORY STATUS.
memory being used
Is the response
N
than 0000?
Y
Read socket status using
N
the FINS command READ
SOCKET STATUS.
Is there the maximum
number of bytes in the send
queue (4,096 bytes)?
Is the remote
N
Adjust the remote node to process send data.
to send data?
Y
There may be too much load on the Ethernet
Unit. If the memory exhaustion records show
Is the network
Y
counts, processing may be slow. Check your
applications.
more than 80%?
N
The remote node's TCP socket has closed.
Is the number of
Close the local socket.
Y
bytes received in the
results storage
area 0?
N
Y Make sure that reception processing is
being performed at the remote node.
N
Section 8-4